Boxes of pain, the ability to tell truth from lie, and magic voices that compel people to follow orders – the Bene Gesserit sisterhood are among the spookier elements of the Dune universe.

There is no world stranger than that of ‘Dune‘ for people with extreme talents, such as Paul Atreides’ prescient visions or the control of Voice employed by the Bene Gesserit. In the prequel ...